Seal with extended wear sleeve

Abstract

A bore seal assembly for sealing between first and second adjoining tubular members which comprises a cylindrical seal sleeve having a bore and two radially outwardly extending sealing lips for engaging a seal pocket formed in the adjoining ends of the first and second tubular members, a cylindrical wear sleeve mounted within the bore for supporting the seal sleeve within the seal pocket, and an elongated erosion sleeve extending longitudinally from the wear sleeve into at least the first tubular member, whereby the erosion sleeve protects the first tubular member against erosion.

What is claimed is: 
     
       1. In combination with a joint comprising first and second rotationally connected but disconnectable tubular members, the improvement comprising a bore seal assembly for sealing between the first and second tubular members which comprises: a cylindrical seal sleeve having a bore and two radially outwardly extending sealing lips for engaging a seal pocket formed in the adjoining ends of the first and second tubular members;   a cylindrical wear sleeve removably mounted within the bore for supporting the seal sleeve within the seal pocket;   at least the first tubular member comprising a bore having an enlarged diameter section forming an elongated recess extending longitudinally into the first tubular member from adjacent the seal pocket;   an elongated erosion sleeve extending approximately the entire length of and removably mounted within the recess;   wherein the erosion sleeve protects the bore of the first tubular member from erosion caused by a fluid flowing through the first and second tubular members; and   wherein the tubular members may be disconnected and the erosion sleeve removed and replaced.   
     
     
       2. The joint of claim 1, wherein the erosion sleeve is connected to the wear sleeve and the erosion sleeve and the wear sleeve may therefore be removed and replaced as a unit.